Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Apple maybe planning to release next beta of iOS 5 on Wednesday, August 17th
From report we believe that Apple plans to release their next developer seed of iOS 5 Beta 6, on Wednesday, August 17th This data has came up after some developers contacted 9to5Mac The developers,provided 9to5Mac with the exact date and time of today’s iOS 5 beta 5 release,Do not build your hope up as the seeding can be delayed due to bugs or other reasons out of our control.
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